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Hi I have the same problem, DST800 after 3 times insert the flap is gone. No reply from Airmar now.

That does not sound too good. I'd suggest dealing with the retailer / installer rather than the manufacturer. We dealt with Raymarine, purely as the dealer / installer had done as much as was reasonable to expect in terms of trying to fix the issue.

On a good note they installed the new items the other week and apart from some calibration issues they seem to be working just fine. Plus the amount of water that comes in when changing the speed transducer is minimal.

03-02-2015 06:44 PM

crypttos

Re: Airmar / Raymarine DST800 Transducer Issue

Hi I have the same problem, DST800 after 3 times insert the flap is gone. No reply from Airmar now.

10-15-2014 05:02 PM

Brewgyver

Re: Airmar / Raymarine DST800 Transducer Issue

Thank you for the update, always nice to see a manufacturer doing the right thing.

10-07-2014 03:23 AM

wopalx

Re: Airmar / Raymarine DST800 Transducer Issue

Okay so after involving our local department of fair trading, being told Raymarine was on the case and still not hearing anything I gave them one last phone call to see if they wanted to rectify the issue or involve lawyers.

So to Raymarine's credit they have offered to replace the DST800 with the following to avoid having the same issue of the flapper failing again, and to avoid us having to put another hole in the bottom of the boat;

Speed / Temp Transducer (older style, we have had this on our last boat and it was very reliable)
Wet box in hull Depth Transducer
ITC5 Transducer to SeatalkNG interface so they will talk to the rest of the gear

They will also cover the installation costs of their service dealer.

As we have a haul out planned for February we will wait until then to get it all installed.

Happy to have a resolution finally.

07-22-2014 02:26 PM

Whispering Wind

Re: Airmar / Raymarine DST800 Transducer Issue

Just circling around to post the final solution that works for me, remembering I'm the guy who is NOT going to "just go sailing" for 6 months at a time with a system designed to allow a 17 in. geyser to enter my boat for any reason.

I replaced the DST800 triducer with individual speed and depth ducers. Depth is the DT800, which is the same diameter as the triducer, so it nicely plugs the geyser thru-hull and it will only be removed to refresh the anti-fouling paint as needed. Speed is the ST800, with a smaller diameter like the original analog unit that came with my OEM Raymarine instruments. This required the installation of an additional thru-hull. To be fair to AirMar, they acknowledged my dissatisfaction with their design and helped accomodate my change of equipment.

I am very pleased with the results. When pulling the speed ducer the water entry is very minor, 2-3 in height, which is very similar to what I experienced with my OEM setup. Less than 4 oz of water enter during the swapover and no water on the sole. What doesn't drain to the bilge is quickly wiped up with a towel.

That's it, adios, its time to go sailing.

07-10-2014 01:34 AM

WoobaGooba

Re: Airmar / Raymarine DST800 Transducer Issue

I pulled my DST800 transducer today. Far less water ingress than seen in your video. I was surprised to see how well the flapper worked. Minor geyser 2-3 inches high.

07-08-2014 09:12 PM

wopalx

Re: Airmar / Raymarine DST800 Transducer Issue

It was installed according to the instructions by a Raymarine agent so I can only assume they did it correctly.

There is heaps of lubricant on the transducer and the blanking plug so I doubt it's a lack of lubricant causing the issue.

I know from Raymarine that Airmar had some issues and altered the design a couple of years ago, below is what Raymarine sent me prior to us having the new one installed;

"Regarding the DST800 snap ring, the the ring design was revised as a result of NCR712, reducing the ring gap from 0.56 to 0.112112 in on Airmar ECO 09E0197 with an effectivity date of 02/18/2010. Airmar has implemented the change on all affected products and has purged all of the "old" snap ring stock. If you can provide the serial number(s) or date code of the affected units I will confirm the mfg date and whether these units were assembled with the old or new snap ring version.

As you may recall, the risk of the original valve becoming dislodged requires the ring to be positioned with the gap positioned directly over the valve hinge. Assembly instructions include the orientation of the snap ring with ring gap 180 deg from the valve hinge. An incorrectly positioned ring could occur during assembly, or during post-delivery handling. The ring can be rotated by hand from the "as assembled" orientation (180 deg from the valve hinge) during installation or subsequent handling. Please note, that with the snap ring gap located over the valve hinge (incorrect placement or subsequent manual rotation), the valve body remains securely retained within the housing, but includes a higher risk of failure due to the size of the snap ring gap and valve hinge. "

07-07-2014 09:00 PM

Classic30

Re: Airmar / Raymarine DST800 Transducer Issue

From the amount of water coming in in that video, it does seem to me that you've lost the flapper.

1. On the blanking plug, inspect the O-rings (replace if necessary) and lubricate them with the silicone lubricant supplied or petroleum jelly (Vaseline®)

I found out the hard way with my DST transducer that if the plug wasn't properly lubricated when you pushed it in the first time, due to the extremely close tolerances, pulling it out pulled the flapper out also.. but after doing that once and learning from my mistakes, I've been smearing Vaseline on the plug every couple of times I use it, in accordance with the instructions. I really haven't had a problem since.

I expect you were using one hand for the video. Ignoring that you are taking too long.

Have the plug going in ready to go in one hand with the arrow aligned. Use the other hand to unscrew the plug in place. With one plug in each hand you should be able to switch in two or three seconds. Fast lets in much less water than enters in 15 seconds.

Yes normally it takes me significantly less time. I was however wanting to show the water flow.

I was out for a sail yesterday so took a quick video of the water flow when changing the balancing plug for the transducer.

I expect you were using one hand for the video. Ignoring that you are taking too long.

Have the plug going in ready to go in one hand with the arrow aligned. Use the other hand to unscrew the plug in place. With one plug in each hand you should be able to switch in two or three seconds. Fast lets in much less water than enters in 15 seconds.

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